Pabongka Rinpoche 'Liberation in the Palm of Your Hand' (p.433-434)
"Samsaric happiness is like drinking salt water - no matter how much of it you obtain, it does not satisfy. Suppose a man has but a single coin. He will think, "when will I will get ten coins?" When he gets ten, he then wonders when he will get a hundred. If he ever does, he'll wonder when he will get a thousand. No matter how many he gets, he will not be satisfied.
If you lack contentment, no matter how much wealth or how many possessions you have acquired, you will be no different from a beggar. Once in India, Surata the beggar found a priceless jewel and said he must give it to another beggar. He gave it to King Prasenajit, saying, "O king you lack contentment, and so are the poorest!".
If you are content you may not have any possessions, but you are still rich.
If you are not content, your dissatisfaction is boundless".